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Tryal Rocks
Tryal Rocks, sometimes spelled Trial Rocks or Tryall Rocks, formerly known as Ritchie's Reef or the Greyhound's Shoal, is a reef of rock located in the Indian Ocean off the northwest coast of Australia, northwest of the outer edge of the Montebello Islands group. It is named for the ''Tryall'', the first known shipwreck in Australian waters, which sunk after striking the then-uncharted rocks in 1622. Described as "the theme and dread of every voyager to the eastern islands for the last two centuries", their location was sought for over three centuries before finally being determined in 1969. ==Location and description== Tryal Rocks are located at . They are northwest of the Montebello Islands, off the Australian mainland and part of the state of Western Australia. The rocks and the immediate locale are described as: "two coral reefs, close together, about in length NE-SW; the S reef dries 2.7m. The rocks are located about NW of Montebello Islands. Depths of less than 20m lie within SW and NW of Tryal Rocks; the sea breaks on these shallower depths in bad weather. A 5.5m patch lies W of North West Island Light. The channel between Tryal Rocks and Montebello Islands is wide, with depths of 31 to 40m, and may be used by vessels proceeding to the E side of Barrow Island."
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